The Mayan calendar predicts that the world will end in 2012, and many believe it's true. This Emmy-nominated Discovery Channel documentary illustrates the variety of ways the apocalypse could arrive in. True believers will learn how volcanic eruption, widespread plague, deadly asteroids, neighboring stars, and nuclear and biological weapons could each bring about the extinction of humankind.

Despite their personal short comings, many of the Roman Empires great engineering accomplishments were introduced during the reign of the Caesars. The tradition continued under Vespasian, builder of the Coliseum, Trajan, builder of the Forum, and Hadrian, builder and possibly the designer of the Pantheon. Finally, a decade later Caracalla built a bath complex/recreation center in an effort to secure his own reputation in history.

本片讲述二战史学界不常提及的一段历史，教皇庇护十二世（Pope Pius XII）和纳粹德国到底关系如何。教皇对犹太人大屠杀保持沉默，但是否参与了对希特勒的刺杀？国家地理频道出品。